Rotary valve actuating device



June 15, 1948. w. R. TUCKER 2,443,333

` ROTARY vALvE summe nEvIcs Filed uay 1s,y 1943 2 sheets-sheen 1 mvENToR WARREN R. TUCKER,

ATTORNEYS 2 shams-sneer 2 INVENTOR wAnnrN n. rucxcn www A-rroRNEY W. R. TUCKER v 3 .www A June 15, 1948.

no'rAnrvALvE ACTUATING DEVICE Filed lay 15, 1943 Patented June 15,194a

ROTARY VALVE ACTUATING DEVICE Warren R. Tucker, Dayton, Ohio, assignor to H-P-M Development Corporation. a corporation of Delaware Application May 15, 1943, Serial No. 487.11%(2 This invention relates to control devices and.

in particular, to fluid operable actuating means for a rotary member.

It is an object of this invention to provide a simpliiled iluld operable control device adapted to be used in connection with a rotary member and to selectively move said rotary member into any one of a plurality of predetermined positions.

It is another object to provide a control device including two rotary fluid operable control members for controlling the movement of a rotary element so as selectively to move the latter into any one oi' at least three predetermined positions.

Another object of the invention consists in the provision ot a control device including vtwo iluid operable rotary members, one of which is adapted to be connected with a rotatable element to be controlled, whereas the other one of rsaid rotary members is movable into a plurality of predetermined positions for limiting the movement of said ilrst mentioned rotary member.

It is still another object to provide a control motor, including a plurality of concentrically arranged iluid operable rotary members, th'e relative movement of which is hydraulically limited and variable, while one of said rotary members is adapted to control the movement of a rotatable element selectively into any one of a plurality of predetermined positions.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with th accompanying drawings, in which:

Figure 1 diagrammatically illustrates the control device according to the invention in connection with a rotary valve to be controlled and a 6 Claims. (Cl. 121-38) 2 groovedabutment area |2 for abutment with a stop member I4 arranged in and carried by the control casing I0.

The control rotor furthermore comprises a f recess or passageway I5 with a grooved 'abutment area I6 for abutment with a stop member l1, which, similar to the stop member I4, is carried by and arranged in the control casing I0. The stops I4 and I1 may be connected to the control casing I0 in any desired manner, for instance as shown in Figure 2 with regard to th'e stop I1 by means of screws 23. 1

The control rotor is furthermore provided with a V-shaped recess |8 in which is reciprocably mounted a control vane |9, the control shaft 2li of which is journalled in a correspondingly shaped recess in the control rotor |I.

The control vane I3 is adapted selectively to engage the abutting area 2| or the abutting area 22 of the control rotor The control shaft 20 connected to the control vane I9 is provided with longitudinal bores 24 and 25 which respectively communicate with transverse channels 26 and 21. The bores 24 and 25 are plugged at' their lower ends by plugs 2li.- 'I'he control shaft 20 has an extension 29 which' engages a correspondlngly shaped recess 30 of a valve'shaft 3|. The valve shaft 3| is connected to the rotary valve member 32 of the rotary valve, generally designated 33 and comprising a valve casing 34 with valve ports 35, 36, 31, 38, 33 and 40. A rotary valve member 32 is provided with recesses 4| and pilot valve for controlling the iiow of actuating iluid to said control device. y

Figure 2 is a longitudinal section through the control device oi the present invention.

Figure' 3 is a longitudinal section through the pilot valve.

Figures 4, 5, 6 and 7, respectively, illustrate various positions oi the control device, the pilot valve and the valve to be controlled and including various operative positions of uid motors controlled by the valve tc be controlled;

` Structural arrangement Referring now to the drawings in detail, and

Figures 1 and 2 thereof in particular, the control device shown therein comprises a casing IIl having reciprocably mounted therein a first rotor A'li'he control rotor |I is provided with a recess or passageway I2 having at one end thereof a 42 which' are interconnected through a channel or passageway 43. The passageway 43 is connected through a passageway or channel with the port 39` which latter is connected throughconduit 45 with' a pressure line 46 communicating with the pressure sideof a fluid source such las a pump 41.

The suction side of the pump 41 is connected through a conduit 48 with a iluid reservoir or tank 49. Also connected with the tank 49 is a conduit 50. Branching oli' from th'e conduit 50 is a conduit 5I leading to the port 40. The port 4|) is connected through a channel or passageway 4| in the rotary valve member 32 with a passageway or channel 52 which latter interconnects th'e recesses 52 and 54 provided in the rotary valve member 32. The actual construction oi the rotary valve 33 is immaterial with regard to the present invention and may be identical to the in which is reciprocably mounted a plunger 58.

The upper portion of the cylinder 51 is connected through a. conduit 53 with the port 31. The port 38 communicates through a conduit 88 with the upper portion of th'e motor cylinder 8| having reciprocably mounted therein a, plunger 82. The lower portion of the cylinder 8| is connected through a conduit 83 with the port 38.

Referring now to the pilot valve 65, the same comprises a valve rotor 84 with extensions 85 and 88 rotatably mounted in antisfriction bearings 81 and 88. The valve rotor 84 which is rotatable in the valve casing 83 is provided with recesses 18 and 1| interconnected through a passageway or channel 12. The passageway 12 communicates through the passageway or channel 13 with the pressure line 48. The recess 1| furthermore communicates through the conduit 14 with the port 18 in th'e control casing I8. 'I'he valve rotor 84 is furthermore provided with y.recesses 18 and 11 interconnected through a channel or passageway 18 which latter communicates through a channel or passageway 18 with th'e exhaust conduit 58.

The recess 11 is connected through a conduit 88 with the port 8l in the control casing I8 which port communicates with an annular recess 82 in the control rotor The annular recess 82 is adapted to communicate through passageway 83 Awith an annular recess 84 which latter communicates through a bore 85 with the longitudinal bore 25. The recess 18 communicates through a conduit 88 with a port 81 in the control casing I8 which port communicates with an lannular channel 88. The channel 88 is in fluid communication with an annular channel 88 through passageway 88. The annular channel 83 is in iluid i communication through bore 8| with the longitudinal bore24 in the control shaft 28.

Gperation It may now be-assumed that all parts occupy the position sh'own in Figure 1 and that it is now desired to cause the plungers 58 and 82 to perform a cycle. To this end, the operator starts the pump 41 and shifts the valve rotor 84 of the pilot valve 55 from Figure 1 position into the position of Figure 5, i. e., by 45. Pressure fluid delivered by the-pump 41 will then pass th'rough conduit or pressure line 48 and passageway 12 intothe recess 1I and from there through the conduit 14 into the recess I2 where it will `act upon the grooved abutment area I3.

However, inasmuch as the grooved abutment area I8 already abuts the stop member I1, .no movement of the rotor ||v is effected but this rotoi is merely positively held in its position. Furthermore. pressure iiuid from the'recess 1| 'passes through conduit 88, the annular recess 82,

the channels or passageway 8.3, the annular recess 84 an'd the bore 85 into thebore 25 from where it passes through the transverse channel 21 and acts on the vane I9 so as to move the same from Figure 1 position into Figure v5 position. When the vane I8 abuts the abutting area 2| it comes to a stop.

The thus effected movement of the vane I8. causes a corresponding rotation of the shaft 28,

` and inasmuch as the latter is connected to the rotary valve member 32, the latter has performed a corresponding movement so that it now occupies the position shown in Figure 5. In' this 4 sure iiuid passes through the channel 44 into the channel 43 and is conveyed in part into the recess 4| and in part into the recess 42. From the re- Y cess 42, the fluid passes through conduit 83 into the lower portion of the cylinder 8| where it acts upon the plunger 83 and holds the latter in its y upper portion.

Furthermore, nuid passes from the recess 42 through conduit Eil into the upper portion of the cylinder 81 where it acts upon the plunger 88 so as to move the latter downwardly. The fluid expelled from the lower portion of the cylinder 81 during this downward movement escapes through conduit 58 into the recess 54 and from there through the passageways 82 and di and-the conduit 5| and exhaust conduit 88 into the tank 48. Consequently, movement of the pilot valve 55 in the Figure 5 position causes the plunger 58 to begin its downward movement while the plunger 82 stays/in its uppermost position. l c

The operator may now shift the pilot valve rotor 84 by 90 from Figure 5 into Figure 6 position. As a result thereof, pressure iiuid delivered by the pump 41 will pass through conduit 48 into the passageway 12 and from there in part into the conduit 92 and in part into the conduit 88.y

Fluid conveyed into the conduit 92 acts upon the grooved abutment area I8 and shifts the control rotor |I from Figure 5 into Figure 6 position where it is stopped since the grooved abutment area `I3 engages the stop member |4.

During this movement, the vcontrol rotor carries the vane I9 along since the abutment area 22 engages the vane i8. Fluid conveyed through the conduit 88 passes through the bore 24 and the transverse channel 28 and acts upon the vane I8 so-as to positively cause the latter to engage the abutment area 22. The vane I8 and the control rotor II .now occupy the position shown in Figure 6.l

In view of the thus described movement of the vane I3, the rotary valve member 32 connected to its downward movementl The fluid expelled from position, pressureluid delivered by the pump 41 passes through conduits 48 and 45 to the port 38 in the valve casing 34. From here the presthe cylinder 51 during this downward movement escapes through conduit 58 into the passageway 52 and from there through conduits 5I and 58 into the tank 49.l A

The nuid conveyed into the conduit 88 enters the upper portion of the cylinder 8| where it acts upon the plunger 82 so as to move the latter downwardly. The uid expelled from the lower portion of the cylinder 8| dur-lng this downward movement escapes through conduit 83 and the y passageway 52 into the conduit 5| and from there through the exhaust conduit 88 into the tank 48. Consequently, the movement of the pilot valve 55 into Figure 8 position causes both plungers 88 and 82 to move downwardly.

When the plunger 58 has reached its downward position, or it is desired to reverse the movement of this plunger, the operator shifts the pilot v'alve 58 in anti-clockwise direction with regard to Figure 1 by 45. so that it occupies the position shown in Figure '7. In this position, pressure fluid delivered by the pump 41 passes through pressure .passes through the bore 25 and the transverse bore 21 so that it acts upon the vane I9 and causes the same to move in clockwise direction until it abuts the abutment area 2|. When the vane I9 has reached this position, it comes to a stop. VThe iiuid expelled by the vane during its movement escapes through the channel 26 and the bore 24, through conduit 85 into the passageway 'I8 and from there through the exhaust conduit 50 into the tank 49. Y

As a result of this movement of the vane I9.. the rotary valve member 32 to be controlled has moved into Figure 7 position. In this position, pressure fluid is delivered by the pump 41 through conduit 46 and conduit 45 into the passageway 43 and from there in part into conduit 56 and in part into conduit 6I).r The fluid conveyed into conduit 56 enters the /lower portion of the cylinder 51 where it acts upon the plunger 58 and moves the latter upwardly since the upper portion of the cylinder 51 is'now connected through conduit 59, the passageway 52 and conduits 5| and B with the tank 49. The pressure fluid conveyed into-the conduit BI'I acts upon the upper portion of the plunger 62 so as to cause the latter either to cont-inue'its downward movement or to stay in its lower position.

In order to restore the initial position or to complete the cycle, the operator moves the pilot valve 55 from Figure 7 position by 45 in anticlockwise direction. The pilot valve rotor 64 will then occupy the position shown in Figure 4, in which pressure iiuid delivered by the pump 41 passes through conduit 46 and the passageway 42 in part into the -conduit 86 and in part into the conduit 14. Pressure fluid conveyed into the conduit 14 acts upon the grooved abutment area I3 to thereby shift the control rotor II in anti-clockwise direction from Figure 7 into Figure 4 position. The pressure fluid conveyed into the conduit 86 passes through the bore 24 into the transverse bore 26 and here acts upon the vane I9 so as to move the latter in anti-clock wise direction until its abuts the abutment area 22 where it comes to a stop. The vane I9 therefore now occupies the position shown in Figures 1 and 4.

In view ofthe last mentioned movement of the vane I9, the rotary valve member 32 has moved from Figure 7 position into Figure 1 or Figure 4 position. In this position, pressure fluid delivered by the pump 41 passes through conduit 45 and conduit 45 into the channel 43 and from there in part into the conduit 56 andlin part into the conduit 83. The pressure fluid conveyedI through conduit 56 into the lower portion of the cylinder 51 causes the plunger 58 to continue its upward movement since the upper portion of the cylinder 51 is connected with the tank 49 through conduit 59, passageway 52 and conduits 5I and 50.

The fluid conveyed into conduit 63 enters the lower portion of the cylinder 5| and acts upon the plunger 62 so as to move theV latter downwardly since the upper portion of the cylinder 6| is connected with the tank 49 through conduit 60,

the passageway 52 and the conduits 5| and 50. All parts now again occupy their initial posi tion shown in Figures 1 and 4.

While the control valve according to the invention has been described in connection with four different positions, it is oi' course understood that it need notv necessarily be -moved through these four positions for a complete cycle. For instance, if the plungers 58 and 62 reciprocate the clamping plunger and the injection plunger of an injection molding machine, the movement 'of the control valve rotor II from Figure 6 into Figure 7 position may be omitted and instead the'valve rotor may be moved from Figure 6 into Figure 5 position and thereafter from Figure 5 into Figure 4 position.

If it is desired to actuate the plungers 58 and 62 so that one plunger moves in one direction while the other plunger moves in the opposite dilrection, the control rotor II may be alternately moved from Figure 5 into Figure 7 position and vice versa.

While the present invention has been described in connection with a rotary valve, it will be clear that it may be used in connection with any rotary member to be controlled as for instance a switch member.

,It is of course understood that the present invention is by no means limited to the particular structure shown in the drawings, but also embraces any modifications within the scope of the appended claims.

Having thus fully described and ascertained the nature of my said invention, what I claim as new and desire to secure by Letters Patent is:

l. In combination in a control device, a stationary casing, spaced stop elements connected to said casing, a first ,control member rotatably mounted in said casing and movable through 'a predetermined angle corresponding to the distance between said s-top elements, fluid operable means associated with said control member for actuating the same, a second control member ar- 'a first fluid operable rotatable control member mounted in said casing, spaced stop means associated with said casing for limiting the rotation of said control member to a predetermined angle, a second control member arranged within said rst control member, vane means associated with said second control member and operable in response to fluid pressure acting thereupon for reciprocating said second control member relative to said rst control member, and spaced stop means associated with said first control member for limiting the rotation of said second control member to a. predetermined angie.

3. In combination in a control device, a stationary casing comprising two spaced stop means, a rs-t rotary member having two stepped segmental recesses adjacent the periphery thereof, one of said recesses cooperating with one of said stop means while the other one of said recesses cooperates with the other stop means, means for admitting pressure uid selectively into either one of said recesses to bring abou-t a rotative movement of said rotary member, a second rotary member rotatable within said firs-t rotary member and including means for connection with a rotatable element to be controlled, fluid operable means associated with said second rotary member for actuating the same, and means associated with said first rotary member for limiting the movement of said second rotary member.

4. 1n combination in a control device, a casing provided with a plurality of ports for selectively admitting fluid to and allowing the flow of fluid from said casing, a i'lrst fluid operable control member rotatably mounted in said casing, said control member being provided with a plurality of spaced annular recesses at the outer periphery thereof, said rotary member also being provided with an axial bore, a plurality of annular passageways at the periphery of said bore and hydraulically connected with the annular recesses on the outer periphery of said rotary membei', a. second fluid operable rotary member rotatably mounted in said bore, means for preventing movement of said second rotary member beyond a, predetermined angle relative to said first rotary member, and means for limiting the rotary movement of said first rotary member in said casing. Y

5. In a controldevice, a plurality of relatively rotatable control elements itelescopically arranged and including a casing, means associated with each pair of adjacent elements for limiting the relative movements thereof, chamber means around said actuated element.

formed by adjacent elements for receivln PIES- sure fluid for actuating said elements, and means for supplying actuating fluid selectively to said chambers. v

6. Ina control dev-ice, a plurality of relatively rotatable control elements telescopicaily arranged and including a casing, means associated with each pair .of adjacent elements for limiting the relative movements thereof, and means for actuating each of said elements so as to move the vsame together with the other of said elements arranged within said actuated element but independently of the other of said elements arranged WARREN R. TUCKER.

REFERENCES CITED The following references are of record in the lle of this patent:

UNITED STATES PATENTS Number Name Date 691,692 Zweigbergk Jan. 21, 1902 2,197,867 Klement 'Apr. 23, 1940 FOREIGN PATENTS Number Country Date 73,412 Switzerland Oct. 2, 1916 430,801 Germany June 25, 1926 

